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path: root/drivers/s390/crypto/ap_bus.c
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Diffstat (limited to 'drivers/s390/crypto/ap_bus.c')
-rw-r--r--drivers/s390/crypto/ap_bus.c77
1 files changed, 49 insertions, 28 deletions
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c
index 327255da115a..4feb27215ab6 100644
--- a/drivers/s390/crypto/ap_bus.c
+++ b/drivers/s390/crypto/ap_bus.c
@@ -169,6 +169,19 @@ static int ap_configuration_available(void)
return test_facility(12);
}
+static inline struct ap_queue_status
+__pqap_tapq(ap_qid_t qid, unsigned long *info)
+{
+ register unsigned long reg0 asm ("0") = qid;
+ register struct ap_queue_status reg1 asm ("1");
+ register unsigned long reg2 asm ("2") = 0UL;
+
+ asm volatile(".long 0xb2af0000" /* PQAP(TAPQ) */
+ : "+d" (reg0), "=d" (reg1), "+d" (reg2) : : "cc");
+ *info = reg2;
+ return reg1;
+}
+
/**
* ap_test_queue(): Test adjunct processor queue.
* @qid: The AP queue number
@@ -179,17 +192,15 @@ static int ap_configuration_available(void)
static inline struct ap_queue_status
ap_test_queue(ap_qid_t qid, unsigned long *info)
{
- register unsigned long reg0 asm ("0") = qid;
- register struct ap_queue_status reg1 asm ("1");
- register unsigned long reg2 asm ("2") = 0UL;
+ struct ap_queue_status aqs;
+ unsigned long _info;
if (test_facility(15))
- reg0 |= 1UL << 23; /* set APFT T bit*/
- asm volatile(".long 0xb2af0000" /* PQAP(TAPQ) */
- : "+d" (reg0), "=d" (reg1), "+d" (reg2) : : "cc");
+ qid |= 1UL << 23; /* set APFT T bit*/
+ aqs = __pqap_tapq(qid, &_info);
if (info)
- *info = reg2;
- return reg1;
+ *info = _info;
+ return aqs;
}
/**
@@ -237,14 +248,12 @@ ap_queue_interruption_control(ap_qid_t qid, void *ind)
*
* Returns 0 on success, or -EOPNOTSUPP.
*/
-static inline int ap_query_configuration(void)
+static inline int __ap_query_configuration(void)
{
register unsigned long reg0 asm ("0") = 0x04000000UL;
register unsigned long reg1 asm ("1") = -EINVAL;
register void *reg2 asm ("2") = (void *) ap_configuration;
- if (!ap_configuration)
- return -EOPNOTSUPP;
asm volatile(
".long 0xb2af0000\n" /* PQAP(QCI) */
"0: la %1,0\n"
@@ -257,6 +266,13 @@ static inline int ap_query_configuration(void)
return reg1;
}
+static inline int ap_query_configuration(void)
+{
+ if (!ap_configuration)
+ return -EOPNOTSUPP;
+ return __ap_query_configuration();
+}
+
/**
* ap_init_configuration(): Allocate and query configuration array.
*/
@@ -346,6 +362,26 @@ static int ap_queue_enable_interruption(struct ap_device *ap_dev, void *ind)
}
}
+static inline struct ap_queue_status
+__nqap(ap_qid_t qid, unsigned long long psmid, void *msg, size_t length)
+{
+ typedef struct { char _[length]; } msgblock;
+ register unsigned long reg0 asm ("0") = qid | 0x40000000UL;
+ register struct ap_queue_status reg1 asm ("1");
+ register unsigned long reg2 asm ("2") = (unsigned long) msg;
+ register unsigned long reg3 asm ("3") = (unsigned long) length;
+ register unsigned long reg4 asm ("4") = (unsigned int) (psmid >> 32);
+ register unsigned long reg5 asm ("5") = psmid & 0xffffffff;
+
+ asm volatile (
+ "0: .long 0xb2ad0042\n" /* NQAP */
+ " brc 2,0b"
+ : "+d" (reg0), "=d" (reg1), "+d" (reg2), "+d" (reg3)
+ : "d" (reg4), "d" (reg5), "m" (*(msgblock *) msg)
+ : "cc");
+ return reg1;
+}
+
/**
* __ap_send(): Send message to adjunct processor queue.
* @qid: The AP queue number
@@ -363,24 +399,9 @@ static inline struct ap_queue_status
__ap_send(ap_qid_t qid, unsigned long long psmid, void *msg, size_t length,
unsigned int special)
{
- typedef struct { char _[length]; } msgblock;
- register unsigned long reg0 asm ("0") = qid | 0x40000000UL;
- register struct ap_queue_status reg1 asm ("1");
- register unsigned long reg2 asm ("2") = (unsigned long) msg;
- register unsigned long reg3 asm ("3") = (unsigned long) length;
- register unsigned long reg4 asm ("4") = (unsigned int) (psmid >> 32);
- register unsigned long reg5 asm ("5") = psmid & 0xffffffff;
-
if (special == 1)
- reg0 |= 0x400000UL;
-
- asm volatile (
- "0: .long 0xb2ad0042\n" /* NQAP */
- " brc 2,0b"
- : "+d" (reg0), "=d" (reg1), "+d" (reg2), "+d" (reg3)
- : "d" (reg4), "d" (reg5), "m" (*(msgblock *) msg)
- : "cc" );
- return reg1;
+ qid |= 0x400000UL;
+ return __nqap(qid, psmid, msg, length);
}
int ap_send(ap_qid_t qid, unsigned long long psmid, void *msg, size_t length)